Question

What is an Elmo unit?

Answer 1

Elmo is a Muppet character on the children's television show Sesame Street.
He is a furry red monster with a falsetto voice, who hosts the last full fifteen-minute segment (five minutes after 2017) on Sesame Street, "Elmo'sWorld", which is aimed at toddlers. 

Answer 2

Explanation:

Elmo is a Japanese electronics and optics company that produces CCTV equipment (including CCD cameras), projectors, and other presentation devices. They are also well known for their series of high-end Super 8mm projectors during the 1970s.